Tube-rolling mill.



H. STUTING.

TUBE ROLLING MILL.

. APPLICATION FILED PEB.13.,1909. 96 1,8 1 8a Patented June 21, 1910.

4 SHEETS-SHEET l.

llH

H. STUTING.

TUBE ROLLING MILL.

APPLICATION FILED P161313, 1909.

Patented June 21, 1910.

Z -MVIQ H. STTTTING.

TUBE ROLLING MILL.

APPLICATION FILED 313.13, 1909.

961,818, Patented June'21, 1910.

4 SHEETS-SHEET 3.

= s n a" 0 7 @j :2 m A [Z ii 7 W Mfi i z 1m H. sTtiTING.

TUBE ROLLING MILL.

APPLICATION FILED FEB. 13, 1909. 961,818 Patented June 21,1910.

4 sums-4511mm 4.

HEINRICH s'rfi'rmeor wI'rrnn, ennmnnr.

TUBE-ROLLING MILL.

Specification of Letters Patent.

Application filed February 13, 1909.

Patented June 21, 1910.

Serial No. 477,513.

To all "w'lwm it may concern:

Be it know-n that I, HEINRICH S'ri'rrINo, a subject of the German Emperor, and residing at 26 Breddestrasse, Witten a/d Ruhr, Germany, have invented certain new and useful-Improvements in Tube-Rolling Mills, of which the following is a specification.

This invention relates to improvements in rolling mills for the manufacture of seamless of sets of rolls may be employed arranged.

behind one another.

In the accompanying drawings :-Fig ure 1 is a side elevation partly in' vertical longitudinal section of one rolling mill embodying the present improvements, the parts being shown" in one position of operation.

Fig. 2 is a similar view of a succeeding set with the parts shown in another positionof operation. Fig. 3 is a plan to Fig. 1. Fig. 4 is a plan to Fig. 2. Fig. 5 is a view of the front abutment looking in the'dircction indicated by the arrow a in Fig. 1. big. 6 is a section on the line 6-6 of Fig. 1, showing the turning mechanism. Fi 7 is a diagrammatic side elevation part y in section of the improved rolling mill comprising two pairs of rolls eachI'pair having two passes. Fig. 8 is a plan to ig 7 Referri to Figs. 1 and 3, 6 indicates a seamless t fi be being rolled. c and d are the rolls of the first set in the series. 6 is the plug supported by the mandrel, f. g are tion, f, of the mandrel, f. On leaving t ese .will re rolls the front end of the tube, 6, strikes the tongs, g, and forces the jaws, 9, out of engagement with the mandrel, f. The tube, 6, in passing through the open jaws, g, is gripped by the rear driving rolls, h, and carried toward the front driving rolls, 7c. These rollers, is, rock with the tongs, g, in such a manner that the said tongs cannot close upon the tube, 5, until the said tube has passed completely through the rolls, 7c. The result of this is that the jaws of the tongs p, constituting the front abutment ease the tube entirely and will then close again. The tube, 12,, has now reached the turnin device by means of which the tube is to e turned through 90 degrees for the purpose of preventing the formation of fins which might occur if the tube were passed always in the same position through the succeeding sets of rolls. This turning device (Fig. 6) comprises two approximately vertical flat plates, 0, mounted in casings, p, so as to be capable of up and,

down movement therein. These plates are connected bylinks, g, to a lever, r, fixed on -a rocking shaft, 8, which is actuated by means of a lever, 13 (Fig, 5). The ends of this lever are connected b means of two rods, u, to the rear ends, 9' of the tongs, g. A conveyer chain, '0, (Fig. 1) is located between the two plates, 0, ofthe turning device, and serves to feed the tube, 6, along when the said tube, 6, has been turned.

The operation of the turning device is as follows :When the tongs, g, are opened by the entr of the-tube, b, thereinto, the rocking sha s, is rotated thereby through the medium of the rods, u, and the lever t, in such a manner as to cause the plates, 0, of the turning device to move respectively up and down. When the tube, 6, has advanced beyond the tongs, g and the rolls, in, and has reached the turning device the said ton s are closed by the action of the springs, g At the same time the plates, 0, move again in opposite directions in the same manner as in the opening movement of the tongs, and thereby turn the tube between them on its own axis through 90 degrees. The upper end of one late and the lower end of the other plate is bent outwardly so that when the two plates a proach their hi hest and lowest positions, t iey will release t e tube at the end of the turning movement. After the tube, 6, has been turned by the plates 0, and

released by them as described, the said tube it into the next tongs, w. In its advance the front end of the tube strikes and opens the tongs, w, and is then conveyed by the driving rolls, 3/ and .2, completely out of the first rolling mill.

The sequence of operations vis repeated in the second and following mills or! rolling ap aratus.

X11 the driving rolls and conveyer chains are driven from the line of shafting, i, which may be driven from it's own mill, or by a separate motor.

In the rolling mill shown in Figs. 7 and 8 the devices for effecting the automatic disengagement of the abutments are arranged to operate in alternately opposite directions.

Having now describedmy invention what- I claim as new'and desire to secure'by Letters Patent is 1. In a rolling mill of the kind described the combination of a plurality of sets of rolls for rolling seamless tubes, a mandrel section cooperating with each said set of rolls, two abutments for each said mandrel section, located behind each other and behind the respective set of rolls, and means operated by the tube being rolled whereby the tube in its advance throws each abutment successively out of operation, as set forth.

2. In a rolling mill .of the kind described the combination of a plurality'of sets of rolls for rolling seamless tubes, a mandrel section cooperating with each said set of rolls, two pairs tongs constituting two abutments located behind each other and behind the respective set of rolls, and means whereb each pair of tongs is' opened by the tube in its advance throughthe rolling mill, as set forth.

3. In a rollingmill of the kind described, the combination of a plurality of sets of rolls for rolling seamless tubes, a mandrel section cooperating with each said set of rolls, two abutments for each said mandrel section, located behind each other and behind the respective set of rolls, means operated by the tube being rolled whereby the tube in its advance throws each abutment successively out of operation, and means for rotating the tube on its axis operated by each of said abutments as it is thrown out of operation by the advance of the tube, as set forth.

4. In a rolling mill of the kind described, the combination of a plurality of sets of rolls for rolling seamless tubes, a mandrel section cooperating with each said set of rolls two pairs of tongs constitutingtwo abutments located behind each other and behind the respective sets of rolls, means whereby each pair of tongs is opened by the tube in its advance through the rolling mill, and means for rotating the tube on its axis operated by each of said pairs of tongs as; it is opened by the advance of the tube, as set forth.

5. In a rolling mill of the kind descrlbed,

,the combination of a plurality of sets of rolls for rolling seamless tubes, a mandrel section cooperating with each said set of rolls, two pairs of tongs constituting two abutments located behind each other and behind the respective set of rolls, means whereby each pair of tongs is opened by the tube, in its advance through the rollingmill, two plates vertically movable simultaneously in opposite directions, adapted to gri the rolled tube between them and means or operating said plates from the receding pair of tongs, whereby the said tu e is turned partly rotated on its axis on leaving the said tongs,

for the purpose of preventing the formation of a fin on the rolled tube as set forth.

6. In a rolling mill of the kind described the combination of a plurality, of sets of rolls site directions, adapted to grip the rol ed tube between them and means operating said plates from the preceding pair of tongs, whereby the said tube is rotated on its axis on leaving the said tongs, for the urpose of preventing the formation of a n on the rolled tube and a. chain conveyer between the said plates for conveyin the tube after rotation to the next pair of tongs, as set forth.

7. In a rolling mill of the kind described the combination of a plurality of sets of rolls for rolling seamless tubes, a mandrel section cooperating with each said set of rolls, two pairs of tongs constituting two abutments located behind each other and behind the respective set of rolls, means whereby each pair of tongs is opened by the tube in its advance through the rolling mill, two plates "vertically movable simultaneously in op 0- site directions, adapted togrip the rol ed tube between them, a lever mounted on a rocking shaft, links connecting said plates to the respective ends of said lever, a lever on said rocking shaft and rods connectin the respective ends of the last mentioned lever, to the rear ends of the preceding pair of tongs, whereby the tube is rotated on its axis as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HEINRICH STUTING. [L.s.]

Witnesses:

O'r'roKoNIs, W. VV.'BRUNsw1oK. 

